Abstract
We developed several Fe-based bulk metallic glasses with a unique combination of large glass-forming ability and excellent soft magnetic properties by minor doping of Cu in the Fe76C7.0Si3.3B5.0P8.7alloy. Proper additions of the non-magnetic copper element which has a positive heat of mixing with Fe, coupled with adequate annealing, can stimulate formation of ∼5 nm Fe ferromagnetic nanocrystals, which results in the increment in the saturation magnetization. Over-annealing which induced coarsening of the -Fe nanocrystals reduces the ferromagnetic exchange interaction between the nanosized -Fe crystals and increases the effective magneto-crystalline anisotropy, thereby deteriorating the soft magnetic properties.
Original language | English |
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Article number | 052504 |
Journal | Applied Physics Letters |
Volume | 99 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 Aug 2011 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)